The answer to this question is:
A. Barley and wheat were both civilizations' main crops
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A radioactive microwave background.
The answer is true. Good luck
There are approximately 4000 different minerals and each of those minerals has a unique set of physical properties. These include: color, streak, hardness<span>, </span>luster<span>, diaphaneity, specific gravity, </span>cleavage<span>, fracture, </span>magnetism<span>, </span>solubility<span> and many more. These physical properties are useful for identifying minerals.
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Answer:
Its when unnatural things, turn natural things irregularly hot or cold.
